Neo4j

Amazon Neptune is Amazon's graph database service. The service represents graphs internally using node and edge tables. In the discussed workloads, the video argues that relational databases have so far outperformed Neptune.

LatticeDB is an embedded, single-file property-graph database written in Zig for local applications. It combines relationship traversal, HNSW vector similarity search, and BM25 full-text search in one query language and engine, allowing graph, semantic, and textual queries over the same dataset. It also provides durable named event streams and a graph changefeed through the same transaction and write-ahead-log path as graph writes. The database operates without a server or configuration and is designed for one owning process on one machine with WAL-backed durability. It is distributed through a CLI and bindings or packages for Python, TypeScript/Node.js, Java, and Go. Graph RAG, agent memory, and local knowledge tools are documented as example workloads rather than the engine's definition.

Postgres is an open-source relational database created by Mike Stonebraker and subsequently maintained and enhanced by a volunteer community and companies. It is presented as a widely used database whose open ownership contributed to its adoption and continued development.

Prisma ORM is an object-relational mapper and query builder for Node.js and TypeScript applications, developed by Prisma. It supports PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB, and CockroachDB. The repository's Prisma Next development line is a TypeScript rewrite with a composable core, database support built through a public extension interface, and agent skills that can be registered in a project so AI coding agents can work from a Prisma contract and workflow-specific references. Prisma Next is described as early access and not recommended for production workloads yet.

Ingres is a relational database system created by Mike Stonebraker. It used the QUEL query language and competed with Oracle in the database market.